Add a control that acts as a split agent. The control can be configured to listen for edits on any source layer or can create a temporary sketch layer for creating a split source. Source features will be used to split targets on a target layer. The deferDelete option tells the control to modify feature state instead of destroying split features (for use with a save strategy and a protocol that persists changes). r=ahocevar (closes #1972)

git-svn-id: http://svn.openlayers.org/trunk/openlayers@8998 dc9f47b5-9b13-0410-9fdd-eb0c1a62fdaf
2009-03-10 22:06:19 +00:00
parent 7db0265495
commit 8c0d034516
8 changed files with 1802 additions and 0 deletions
--- a/examples/split-feature.html
+++ b/examples/split-feature.html
@@ -0,0 +1,103 @@
+<html xmlns="http://www.w3.org/1999/xhtml">
+    <head>
+        <title>Split Feature Example</title>
+        
+        <link rel="stylesheet" href="../theme/default/style.css" type="text/css" />
+        <link rel="stylesheet" href="style.css" type="text/css" />
+        <script src="../lib/OpenLayers.js"></script>
+        <script type="text/javascript">
+            var map, vectors, split;
+            OpenLayers.Util.onImageLoadErrorColor = "transparent";
+            function init(){
+                map = new OpenLayers.Map('map');
+
+                // give the features some style
+                var styles = new OpenLayers.StyleMap({
+                    "default": {
+                        strokeWidth: 2
+                    },
+                    "select": {
+                        strokeColor: "#0099cc",
+                        strokeWidth: 4
+                    }
+                });
+            
+                // add rules from the above lookup table
+                styles.addUniqueValueRules("default", "RP_TYPE", {
+                    10: {strokeColor: "#000000", strokeWidth: 2},
+                    12: {strokeColor: "#222222", strokeWidth: 2},
+                    14: {strokeColor: "#444444", strokeWidth: 2},
+                    16: {strokeColor: "#666666", strokeWidth: 2},
+                    18: {strokeColor: "#888888", strokeWidth: 2},
+                    19: {strokeColor: "#666666", strokeWidth: 1}
+                });
+
+                vectors = new OpenLayers.Layer.Vector("Lines", {
+                    isBaseLayer: true,
+                    strategies: [new OpenLayers.Strategy.Fixed()],                
+                    protocol: new OpenLayers.Protocol.HTTP({
+                        url: "data/roads.json",
+                        format: new OpenLayers.Format.GeoJSON()
+                    }),
+                    styleMap: styles,
+                    maxExtent: new OpenLayers.Bounds(
+                        1549471.9221, 6403610.94, 1550001.32545, 6404015.8
+                    )
+                });
+            
+
+
+
+                map.addLayer(vectors);
+
+                map.addControl(new OpenLayers.Control.MousePosition());
+
+                var split = new OpenLayers.Control.Split({
+                    layer: vectors,
+                    eventListeners: {
+                        aftersplit: function(event) {
+                            flashFeatures(event.features);
+                        }
+                    }
+                });
+                map.addControl(split);
+                split.activate();
+                map.zoomToMaxExtent();
+
+            }
+            
+            function flashFeatures(features, index) {
+                if(!index) {
+                    index = 0;
+                }
+                var current = features[index];
+                if(current && current.layer === vectors) {
+                    vectors.drawFeature(features[index], "select");
+                }
+                var prev = features[index-1];
+                if(prev && prev.layer === vectors) {
+                    vectors.drawFeature(prev, "default");
+                }
+                ++index;
+                if(index <= features.length) {
+                    window.setTimeout(function() {flashFeatures(features, index)}, 100);
+                }
+            }
+
+        </script>
+    </head>
+    <body onload="init()">
+        <h1 id="title">OpenLayers Split Feature Example</h1>
+        <p id="shortdesc">
+            Demonstrates splitting of line features.
+        </p>
+        <div id="map" class="smallmap"></div>    
+        <div id="docs">
+            The split control can be configured to listen for edits on any vector layer
+            or it can allow for creation of temporary sketch features.  Modified or
+            newly drawn features will be used to split existing features on any target
+            layer.  This example shows the split control configured to use temporary
+            sketches for the split.
+        </div>
+    </body>
+</html>